<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>命名冲突</title>
  <script src="tab.js"></script>
  <script src="module2.js"></script>
  <script>
    var module = function() {
      console.log('hello everybody, i am a coder');
    }
    module();
  </script>
</head>

<body>
</body>

</html>
